<template>
    <div>
                <!-- 面包屑 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>商品管理</el-breadcrumb-item>
    <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
        <!-- 警告 -->
          <el-alert
     title="参数只能是第三级分类"
     type="warning" :closable="false" show-icon>
        </el-alert>
        <!-- 选择商品分类 -->
        <el-row class="car_opt">
            <el-col>
                <span>选择商品分类：</span>
                 <el-cascader
                v-model="selectedCateKeys"
                :options="catelist"
                :props="cateProps"
                @change="handleChange">
             </el-cascader>
            </el-col>
        </el-row>

        <!-- tab -->
          <el-tabs v-model="activeName" @tab-click="handleClick">
              <!-- 添加动态 -->
            <el-tab-pane label="动态属性" name="many">
                <el-button type="primary" size="mini"
                :disabled="isBtnDisabled" @click="addDialogVisible =true">添加参数</el-button>
<!-- 动态参数表格 -->
<el-table :data="manyTableData" border stripe>
    <!-- 展开行 -->
    <el-table-column type="expand">
        <!-- 循环渲染tag -->
        <template slot-scope="scope">
            <el-tag closable v-for="(item,i) in scope.row.attr_vals" :key="i" @close="handleClosed(i,scope.row)">{{item}}</el-tag>
            <!-- 输入添加标签 -->
            <el-input
            class="input-new-tag"
            v-if="scope.row.inputVisible"
            v-model="scope.row.inputValue"
            ref="saveTagInput"
            size="small"
            @keyup.enter.native="handleInputConfirm(scope.row)"
            @blur="handleInputConfirm(scope.row)"
            >
</el-input>
<el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
        </template>
    </el-table-column>
    <!-- 索引列 -->
<el-table-column type="index"></el-table-column>
<el-table-column label="参数名称" prop="attr_name" ></el-table-column>
<el-table-column label="操作"  >
    <template slot-scope="scope">
<el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
<el-button type="danger" size="mini" icon="el-icon-delete" @click="removeParams(scope.row.attr_id)">删除</el-button>
    </template>
</el-table-column>
</el-table>
            </el-tab-pane>
            <!-- 添加静态 -->
            <el-tab-pane label="静态属性" name="only">
                 <el-button type="primary" size="mini"
                  :disabled="isBtnDisabled" @click="addDialogVisible =true">添加属性</el-button>
                    <!-- 静态属性表格 -->
                    <el-table :data="onlyTableData" border stripe>
                        <!-- 展开行 -->
                          <!-- 展开行 -->
    <el-table-column type="expand">
        <!-- 循环渲染tag -->
        <template slot-scope="scope">
            <el-tag closable v-for="(item,i) in scope.row.attr_vals" :key="i" @close="handleClosed(i,scope.row)">{{item}}</el-tag>
            <!-- 输入添加标签 -->
            <el-input
            class="input-new-tag"
            v-if="scope.row.inputVisible"
            v-model="scope.row.inputValue"
            ref="saveTagInput"
            size="small"
            @keyup.enter.native="handleInputConfirm(scope.row)"
            @blur="handleInputConfirm(scope.row)"
            >
</el-input>
<el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
        </template>
    </el-table-column>
                    <el-table-column type="index"></el-table-column>
                    <el-table-column label="属性名称" prop="attr_name" ></el-table-column>
                    <el-table-column label="操作"  >
                        <template slot-scope="scope">
                    <el-button type="primary" size="mini" icon="el-icon-edit" 
                     @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                    <el-button type="danger" size="mini" icon="el-icon-delete"
                    @click="removeParams(scope.row.attr_id)">删除</el-button>
                        </template>
                    </el-table-column>
                    </el-table>
                 </el-tab-pane>
          
            </el-tabs>
    </el-card>
    <!-- 添加参数或属性的对话框 -->
            <el-dialog
            @closed='addDialogClosed'
        :title="'添加'+titleText"
        :visible.sync="addDialogVisible"
        width="30%"
       >
       <!-- 添加参数对话框的表单 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px"
      >
  <el-form-item :label="titleText" prop="attr_name">
    <el-input v-model="addForm.attr_name"></el-input>
  </el-form-item>
  </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addParams">确 定</el-button>
        </span>
        </el-dialog>

            <!-- 编辑参数或属性的对话框 -->
            <el-dialog
            @closed='editDialogClosed'
        :title="'添加'+titleText"
        :visible.sync="editDialogVisible"
        width="30%"
       >
       <!-- 编辑参数对话框的表单 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px"
      >
  <el-form-item :label="titleText" prop="attr_name">
    <el-input v-model="editForm.attr_name"></el-input>
  </el-form-item>
  </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editParams">确 定</el-button>
        </span>
        </el-dialog>
    </div>
</template>
<script>
export default {
    data (){
        return {
            //分类列表
            catelist:[],
            //级联配置对象
            cateProps:{
                expandTrigger: 'hover' ,
                value:'cat_id',
                label:'cat_name',
                children:'children',
            },
            //级联选择的
            selectedCateKeys:[],
            //被激活的标签页
            activeName:'many',
            //动态数据
            manyTableData:[],
            //静态数据
            onlyTableData:[],
            //控制添加的对话框
            addDialogVisible:false,
            //添加表单数据对象
            addForm:{
                attr_name:''
            },
            //添加表单验证规则
            addFormRules:{
                attr_name:[{required:true,message:'请输入',trigger:'blur'}]
            },
            //编辑
            //修改对话框
            editDialogVisible:false,
            //修改表单对象
            editForm:{
                
            },
            //
            editFormRules:{
                attr_name:[{required:true,message:'请输入',trigger:'blur'}]
            },
         
        }
    },
    created(){
        //获取所有分类
        this.getCateList()
    },
    methods:{
     async   getCateList(){
            const{data:res}=await this.$http.get('categories')
            if(res.meta.status!==200){
                return this.$message.error('获商品分类失败')
            }
        this.catelist=res.data
        },
        //级联选择触发
        handleChange(){
        this.getParentData()

        },
        //tab点击事件
        handleClick(){
        this.getParentData()},
        //获取参数的列表数据
        async   getParentData(){

                     //证明不是三级分类
            if(this.selectedCateKeys.length!==3){
                this.selectedCateKeys=[]
                this.manyTableData=[]
                this.onlyTableData=[]
                return
            }
            console.log(this.selectedCateKeys);
            console.log(this.cateId);
            //根据所选分类，获取参数
     const {data:res}=  await   this.$http.get(`categories/${this.cateId}/attributes`
            ,{params:{sel:this.activeName}})
            if(res.meta.status!==200){
                return this.$message.error('获取参数失败')
            }
            console.log(res.data);
            res.data.forEach(item=>{
                 item.attr_vals=item.attr_vals?
                item.attr_vals.split(' '):[]
                //控制文本框的显示隐藏
                item.inputVisible=false
                //输入值
                item.inputValue=''
            })


            if(this.activeName==='many'){
                this.manyTableData=res.data
            }else{
                this.onlyTableData=res.data
            }
        },
        //关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        //点击添加按钮
        addParams(){
            this.$refs.addFormRef.validate(async valid=>{
                if(!valid) return
                const {data:res}=await this.$http.post(`categories/${this.cateId}/attributes`,
                {attr_name:this.addForm.attr_name,
                attr_sel:this.activeName})
            console.log(res);
                if(res.meta.status!==201){
                    return this.$message.error('添加失败')
                }
                this.$message.success('添加成功')
                 this.getParentData()
                this.addDialogVisible=false
            })
        },
        //修改的关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        //点击修改确定按钮
        editParams(){
                 this.$refs.editFormRef.validate(async valid=>{
                if(!valid) return
                const {data:res}=await this.$http.put(
                    `categories/${this.cateId}/attributes/${this.editForm.attr_id}`, 
                {attr_name:this.editForm.attr_name,
                attr_sel:this.activeName})
            console.log(res);
                if(res.meta.status!==200){
                    return this.$message.error('修改失败')
                }
                this.$message.success('修改成功')
                this.getParentData()
                this.editDialogVisible=false
            })
        },
        //点击修改按钮
      async  showEditDialog(attr_id){
       const {data:res}=   await  this.$http.get(`categories/${this.cateId}/attributes/${attr_id}`,{
                params:{
                    attr_sel:this.activeName
                }
            })
            if(res.meta.status!==200){
                return this.$message.error('获取分类失败')
            }
            this.editForm=res.data
            this.editDialogVisible=true
        },
        //删除
     async   removeParams(attr_id){
    const result=  await  this.$confirm('此操作将永久删除该参数, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        if(result!=='confirm'){
            return this.$message.info('已经取消')
        }
       const {data:res}=await this.$http.delete(
           `categories/${this.cateId}/attributes/${attr_id}`)

           if(res.meta.status!==200){
               return this.$message.error('删除失败')
           }
           this.$message.success('删除成功')
           this.getParentData()
        },
        //tag失去焦点或enter键盘抬起
        handleInputConfirm(){},
        //点击tag
        showInput(row){
            row.inputVisible=true
            //文本框自动有焦点 $nextTick
              this.$nextTick(_ => {
          this.$refs.saveTagInput.$refs.input.focus();
        });
        },//失去焦点
      async  handleInputConfirm(row){
            if(row.inputValue.trim().length===0){
                row.inputValue=''
                 row.inputVisible=false
                 return
            }
           //输入合法了
           row.attr_vals.push(row.inputValue.trim())
           row.inputValue=''
           row.inputVisible=false
           //发送请求 保存
           this. saveAttrVals(row)
    //  const{data:res}=   await   this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,
    //        {attr_name:row.attr_name,
    //        attr_sel:row.attr_sel,
    //        attr_vals:row.attr_vals.join(' ') })
    //        console.log(res);
    //        if(res.meta.status!==200){
    //            return this.$message.error('修改失败')
    //        }
    //        this.$message.success('修改成功')

        },
        //删除对应
        handleClosed(i,row){
            row.attr_vals.splice(i,1)
            this. saveAttrVals(row)
        },
        //删除后，发送请求保存
    async    saveAttrVals(row){

                   //发送请求 保存
     const{data:res}=   await   this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,
           {attr_name:row.attr_name,
           attr_sel:row.attr_sel,
           attr_vals:row.attr_vals.join(' ') })
           console.log(res);
           if(res.meta.status!==200){
               return this.$message.error('修改失败')
           }
           this.$message.success('修改成功')

        }

    },
    //计算属性
    computed:{
        //控制按钮
        isBtnDisabled(){
            if(this.selectedCateKeys.length!==3){
                return true
            }
            return false
        },
        //当前选中的三级分类的ID
        cateId(){
             if(this.selectedCateKeys.length==3){
                return this.selectedCateKeys[2]
            }
            return null
        },
        //动态标题文本
        titleText(){
            if(this.activeName==='many'){
                return '动态参数'
            }
            return '静态属性'
        }
    }
}
</script>

<style lang="less" scoped>
.car_opt{
    margin: 10px;
}
.el-tag{margin: 10px;}
.input-new-tag{width: 120px;}
</style>